20431760

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{2011}}^1$

素因数の和:2151

約数の個数: 40

約数和(自身を含む): 47901696

約数和(自身を除く): 27469936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 2011, 2032, 2540, 4022, 5080, 8044, 10055, 10160, 16088, 20110, 32176, 40220, 80440, 160880, 255397, 510794, 1021588, 1276985, 2043176, 2553970, 4086352, 5107940, 10215880, 20431760]

約数ペア:

[(1, 20431760), (2, 10215880), (4, 5107940), (5, 4086352), (8, 2553970), (10, 2043176), (16, 1276985), (20, 1021588), (40, 510794), (80, 255397), (127, 160880), (254, 80440), (508, 40220), (635, 32176), (1016, 20110), (1270, 16088), (2011, 10160), (2032, 10055), (2540, 8044), (4022, 5080)]